| article html file updated | 7 February 2020 13:44 CET | Update | https://www.mdpi.com/2076-3417/6/9/236 |
| article html file updated | 5 May 2019 06:22 CEST | Update | N/A |
| article html file updated | 27 March 2019 14:28 CET | Update | N/A |
| article html file updated | 27 September 2016 07:56 CEST | Update | N/A |
| article html file updated | 23 August 2016 12:42 CEST | Original file | N/A |
| article xml uploaded. | 23 August 2016 12:41 CEST | Original file | https://www.mdpi.com/2076-3417/6/9/236/xml |
| article pdf uploaded. | 23 August 2016 12:41 CEST | Version of Record | https://www.mdpi.com/2076-3417/6/9/236/pdf |
